EIP-2026-103279

PRE-CVE

F-Secure Internet Gatekeeper 5.40 - Heap Overflow (PoC)

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103279. PoCs published by Kevin Joensen.

AI-analyzed exploit summary This PoC exploits a heap overflow vulnerability in F-Secure Internet Gatekeeper 5.40 by sending a maliciously crafted HTTP POST request with a large Content-Length value and a payload designed to overwrite heap structures. The exploit manipulates heap metadata to achieve arbitrary memory corruption, potentially leading to remote code execution or denial of service.

Description

F-Secure Internet Gatekeeper 5.40 - Heap Overflow (PoC)

Exploits (1)

exploitdb WORKING POC
by Kevin Joensen · pythonwebappslinux
https://www.exploit-db.com/exploits/47996

This PoC exploits a heap overflow vulnerability in F-Secure Internet Gatekeeper 5.40 by sending a maliciously crafted HTTP POST request with a large Content-Length value and a payload designed to overwrite heap structures. The exploit manipulates heap metadata to achieve arbitrary memory corruption, potentially leading to remote code execution or denial of service.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: F-Secure Internet Gatekeeper 5.40
No auth needed
Prerequisites: Network access to the target service on port 9012 · Target software running F-Secure Internet Gatekeeper 5.40
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026